I've writed code for manipulating and transforming objects with on-scene manipulators like 3dsmax, maya ecc...The translation and rotation work well in local and world spaces, but I can't figure out the scaling from a world-space manipulator.

Now, when I scale an object with a local-space manipulator the result is correct,when I scale an object with a world-space manipulator the result is wrong.

I.E.:- I rotate an object for example by 45° around the vertical axis (Y axis)- I set the manipulator mode to world-space, so the manipulator axes are now parallel to world-space basis vectors

scaling along X axis I'm aspect that the scaling vector must show some values on X and Z components (due to previous rotation) and the object must "slide" along the world X axis, but the object scale in some strange way.

This can depend to scale-rotaton-translation sequence? i must change sequence?It's always possible to scale an object with values specified in another than local-space?